embodiments of the present invention will be described with reference to the accompanying drawings . the reference numbers used in fig1 to 3 are still used to show similar components shown in the drawings to be referred to in the following description . detailed explanation will be omitted for such components . fig4 a is an illustration showing an exemplary front view of an ultrasound diagnosis apparatus according to the first embodiment . also , fig4 b is an illustration showing an exemplary side view of the ultrasound diagnosis apparatus according to the first embodiment . as shown in fig4 a , three ultrasound probes 4 b may be placed as active ultrasound probes and two ultrasound probes 4 as standby ultrasound probes on the front face of the main unit 3 while the main unit 3 is still kept compact in size . the main unit 3 has , for example , three main unit connectors 30 as an example of ‘ concave portion ’ below the operation panel 5 . the number of the main unit connectors 30 is not limited to three . the main unit connectors 30 are connected to a circuitry board provided in the main unit 3 and can be connected to active ultrasound probes . the main unit connectors 30 may be provided on the right side of the front face of the main unit 3 . the main unit connectors 30 are slanted on the front face of the main unit 3 towards an upper right direction of the main unit 3 at a predetermined angle . the angle may preferably be around thirty degrees with respect to the horizontal direction . this is because it may become easy for the doctor to connect and disconnect the ultrasound probe 4 to and from the main unit 3 without unreasonable strain on a wrist of the doctor . in other words , the doctor may easily be able to insert the ultrasound probe connector 4 b into the main unit connector 30 and pull it out of the main unit connector 30 without much stress on the wrist . in addition , it is possible to avoid the cable 4 c from being given a strong effort in the vicinity of the ultrasound probe connectors 4 b and being damaged . the cable 4 c may be pulled towards the cable hanger 7 along one of side surfaces of the main unit 3 . the above - mentioned angle may be determined , considering the insertion direction of the ultrasound probe connector 4 b and / or the direction of the cable 4 c led out from the ultrasound probe connector 4 b . the three main unit connectors 30 may be arranged in parallel with one another so as not to unnecessarily occupy a wide space of the front face of the main unit 3 . after the ultrasound probe connector 4 b has been inserted in the main unit connector 30 , the connector fixing tab 4 d is winded to fix the ultrasound probe connector 4 b to the main unit connector 30 so that the ultrasound probe 4 is fixed to the main unit 3 . the ultrasound probe head 4 a is held by the probe head holder 5 a which is provided on the right side of the operation panel 5 . the ultrasound probe head 4 a is omitted in fig4 a to avoid the complication of the drawing . as shown in fig4 a , the main unit 3 also has , for example , two holders 31 as another example of ‘ concave portion ’ below the operation panel 5 . the number of the holders 31 is not limited to two . the holders 31 are not connected to the circuitry board and can be connected to standby ultrasound probes . the holders 31 may be vertically provided on the left side of the main unit 3 along the horizontal direction . a connection surface of the holder 31 where a connection hole to insert the connection pin 4 e is provided is slanted towards the upper inside of the main unit 3 at a predetermined angle . the angle may preferably be around fifteen degrees with respect to the vertical direction . this is because it may become easy for the doctor to place the ultrasound probe connector 4 b to the holder 31 and detach it from the holder 31 . in addition , it is possible to avoid the cable 4 c from being given a strong effort in the vicinity of the ultrasound probe connectors 4 b and being damaged . the above - mentioned angle may be determined , considering the placing direction of the ultrasound probe connector 4 b and / or the direction of the cable 4 c led out from the ultrasound probe connector 4 b . the two holders 31 may be arranged in parallel with each other so as not to unnecessarily occupy a wide space of the front face of the main unit 3 . after the ultrasound probe connector 4 b has been placed to the holder 31 , the connector fixing tab 4 d is winded to fix the ultrasound probe connector 4 b to the holder 31 so that the ultrasound probe 4 is fixed to the main unit 3 . since the holder 31 is not connected to the circuitry board , the fixation is not for the electrical connection but for the physical connection to avoid the ultrasound probe connector 4 b from falling down from the holder 31 . the ultrasound probe head 4 a of the standby ultrasound probe may also be held by another probe head holder which can be provided , for example , on the left side of the operation panel 5 . accordingly , the use of the holders 31 ( and another probe head holder ) can make it possible to hold the standby ultrasound probes with the ultrasound diagnosis apparatus 1 . this is helpful for the doctor to use the standby ultrasound probe by immediately replacing the active ultrasound probe with the standby ultrasound probe . the doctor pulls out the ultrasound probe connector 4 b of the active ultrasound probe from the main unit connector 30 and also detaches the ultrasound probe connector 4 b of the standby ultrasound probe from the holder 31 . then , the doctor can insert the ultrasound probe connector 4 b of the standby ultrasound probe into the main unit connector 30 so as to use it as a new active ultrasound probe . details of the main unit connectors 30 , the holders 31 , and their modified examples will be described with reference to fig5 a to 6 e . fig5 a is an illustration showing an exemplary front view of the main unit 3 . as shown in fig5 a , the main unit connectors 30 and the holders 31 are provided in the main unit 3 . exemplary cross - sectional views of the main unit 3 along lines a - a and b - b are shown in fig5 b and 5c , respectively . the depth of each main unit connector 30 is even and each main unit connector 30 has a concave shape . the main unit connectors 30 are connected to a circuitry board 50 through electric wires 51 . when an ultrasound probe connector 4 b is inserted in the main unit connector 30 , the ultrasound probe connector 4 b is connected to the electric wires 51 as shown in fig5 d . an exemplary cross - sectional view of the main unit 3 along a line c - c is shown in fig5 e . the depth of each holder 31 is not even since the connection surface of the holder 31 where a connection hole 52 to insert the connection pin 4 e is provided is slanted towards the upper inside of the main unit 3 at a predetermined angle . the holders 31 are not connected to the circuitry board 50 . when an ultrasound probe connector 4 b is inserted in the holder 31 , the ultrasound probe connector 4 b is not connected to the circuitry board 50 as shown in fig5 f . modified examples of the main unit connectors 30 and the holders 31 are shown as main unit connectors 32 and holders 33 . exemplary cross - sectional views of the main unit 3 along lines a - a and b - b in fig5 a are shown in fig6 a and 6b , respectively . the depth of each main unit connector 32 is not even since a connection surface of the main unit connector 32 where a connection hole 53 to insert the connection pin 4 e is provided is slanted towards the upper inside of the main unit 3 at a predetermined angle . the main unit connectors 32 are connected to the circuitry board 50 through the electric wires 51 . when an ultrasound probe connector 4 b is inserted in the main unit connector 32 , the ultrasound probe connector 4 b is connected to the electric wires 51 as shown in fig6 c . an exemplary cross - sectional view of the main unit 3 along the line c - c in fig5 a is shown in fig6 d . the depth of each holder 33 is even and each holder 33 has a concave shape . the holders 33 are not connected to the circuitry board 50 . when an ultrasound probe connector 4 b is inserted in the holder 33 , the ultrasound probe connector 4 b is not connected to the circuitry board 50 as shown in fig6 e . in fig6 e , the connector fixing tab 4 d may not be used to fix the ultrasound probe connector 4 b to the holder 33 if the depth of the holder 33 is deep enough to support the ultrasound probe connector 4 b . fig7 a is an illustration showing an exemplary front view of the ultrasound diagnosis apparatus 1 according to the second embodiment . also , fig7 b is an illustration showing an exemplary side view of the ultrasound diagnosis apparatus 1 according to the second embodiment . the difference between the first and second embodiments is that the main unit 3 as shown in fig7 b has supporters 70 each of which for supporting at least a part of the ultrasound probe connector 4 b when the ultrasound probe connector 4 b is inserted in the holder 31 . components similar to those shown in fig4 a and 4b are given the same reference numbers and the detailed explanation of such components is omitted herein although the ultrasound probe head 4 a and the cable 4 c are omitted and not shown in fig7 a and 7b . details of the holder 31 will be described with reference to fig8 a to 8 d . an exemplary cross - sectional view of the main unit 3 along the line c - c in fig5 a is shown in fig . ba . the supporter 70 is provided at positions corresponding to the bottom and sides of the holder 31 so that the ultrasound probe connector 4 b can be supported by the supporter 70 when the ultrasound probe connector 4 b is inserted in the holder 31 as shown in fig8 b . fig8 c is an illustration showing an exemplary side view of the main unit 3 according to the second embodiment . the supporter 70 may be more clearly understood by referring to fig8 c . the supporter 70 is extended away from the front face of the main unit 3 so as to support the bottom and sides of the ultrasound probe connector 4 b . in fig8 c , the supporter 70 may support only a part of each side of the ultrasound probe connector 4 b . the supporter 70 , however , may support a whole surface of either or both of the sides of the ultrasound probe connector 4 b . according to the second embodiment , it may not be necessary to fix the ultrasound probe connector 4 b to the holder 31 with the connector fixing tab 4 d since the ultrasound probe connector 4 b is supported by the supporter 70 . therefore , it may be possible to avoid the ultrasound probe connector 4 b from falling down from the holder 31 without fixing with the connector fixing tab 4 d even if the ultrasound diagnosis apparatus 1 is vibrated for some sort of reasons , for example , traveling of the ultrasound diagnosis apparatus 1 . the position where the supporter 70 is provided and the shape of the supporter 70 are not limited to those shown in fig8 a to 8 c . in the first embodiment , the slanted main unit connectors 30 have been used to electrically connect the ultrasound probe connector 4 b to the circuitry board 50 while the vertically - provided holders 31 have not been connected to the circuitry board 50 . the third embodiment will describe the opposite case to the first embodiment . that is , as shown in fig9 a , the slanted main unit connectors 30 are replaced with holders 34 which are slanted on the front face of the main unit 3 towards an upper right direction of the main unit 3 at a predetermined angle while the vertically - provided holders 31 are replaced with main unit connectors 35 which are vertically provided on the front face of the main unit 3 . details of the holders 34 and the main unit connectors 35 will be described with reference to fig9 b to 9 e . exemplary cross - sectional views of the main unit 3 along the lines a - a and b - b are shown in fig9 b and 9c , respectively . the depth of each holder 34 is even and each holder 34 has a concave shape . here , the holders 34 are not connected to the circuitry board 50 . when an ultrasound probe connector 4 b is inserted in the holder 34 , the ultrasound probe connector 4 b is not connected to the circuitry board 50 as shown in fig9 d . an exemplary cross - sectional view of the main unit 3 along the line c - c is shown in fig9 e . the depth of each main unit connector 35 is not even since the connection surface of the main unit connector 35 where a connection hole 54 to insert the connection pin 4 e is provided is slanted towards the upper inside of the main unit 3 at a predetermined angle . the main unit connectors 35 are connected to the circuitry board 50 through electric wires 55 . when an ultrasound probe connector 4 b is inserted in the main unit connector 35 , the ultrasound probe connector 4 b is connected to the electric wires 55 as shown in fig9 f . the fourth embodiment will be described with reference to fig1 a and 10b . fig1 a is an illustration showing an exemplary front view of the ultrasound diagnosis apparatus 1 according to the fourth embodiment . also , fig1 b is an illustration showing an exemplary side view of the ultrasound diagnosis apparatus 1 according to the fourth embodiment . the difference between the first and fourth embodiments is that the main unit 3 has main unit connectors 36 instead of the main unit connectors 3 . the main unit connectors 36 are slanted on the front face of the main unit 3 towards an upper right direction of the main unit 3 at a predetermined angle . the angle may preferably be around thirty degrees with respect to the horizontal direction . accordingly , the doctor may easily be able to insert the ultrasound probe connector 4 b into the main unit connector 36 and pull it out of the main unit connector 36 without much stress on the wrist . in addition , it is possible to avoid the cable 4 c from being given a strong effort in the vicinity of the ultrasound probe connectors 4 b and being damaged . the cable 4 c may be pulled towards the cable hanger 7 along one or more side surfaces of the main unit 3 . the above - mentioned angle may be determined , considering the insertion direction of the ultrasound probe connector 4 b and / or the direction of the cable 4 c led out from the ultrasound probe connector 4 b . the main unit connectors 36 may be provided along the horizontal direction and arranged in parallel with one another so as not to unnecessarily occupy a wide space of the front face of the main unit 3 . components similar to those shown in fig4 a and 4b are given the same reference numbers and the detailed explanation of such components is omitted herein . the number of the main unit connectors 30 is not limited to three . in fig1 a , the main unit 3 does not have any holder . if necessary , one or more holders may be provided under the arrangement of the main unit connectors 36 . fig1 is an illustration showing an exemplary front view of the main unit 3 according to the fifth embodiment . the main unit 3 has main unit connectors 37 to 39 . as understood from fig1 , the main unit connectors 37 to 39 are not arranged in parallel with one another but at a different angle relative to each of the main unit connectors 37 to 39 . particularly , the main unit connector 37 provided closer to the top of the main unit 3 is less slanted on the front face of the main unit 3 towards an upper right direction of the main unit 3 , compared to the main unit connectors 38 and 39 while the main unit connector 39 provided closer to the bottom of the main unit 3 is more slanted on the front face of the main unit 3 towards an upper right direction of the main unit 3 , compared to the main unit connectors 37 and 38 . this type of layout may require more space on the front face of the main unit 3 than the parallel layout and so may be implemented when the main unit 3 is not required to be so compact . this layout may make it easier for the doctor to insert the ultrasound probe connector 4 b into the main unit connectors 37 to 39 and pull it out of the main unit connectors 37 to 39 . any combination of two or more of the main unit connectors 30 , 32 , 35 to 39 and the holders 31 , 33 , and 34 may be made as another embodiment or modification of the embodiments according to the necessity . the side surface of the main unit 3 where the main unit connectors and the holders are provided is not limited to the front face but may alternatively be other side surface of the main unit 3 such as , for example , a lateral face of the main unit 3 . further , the main unit connectors and the holders may be provided in a plurality of side surface of the main unit 3 . the main unit connectors may alternatively be slanted towards an upper left direction of the main unit 3 at a predetermined angle , if necessary . the embodiments of the present invention described above are examples described only for making it easier to understand the present invention , and are not described for the limitation of the present invention . consequently , each component and element disclosed in the embodiments of the present invention may be redesigned or modified to its equivalent within a scope of the present invention . furthermore , any possible combination of such components and elements may be included in a scope of the present invention as long as an advantage similar to those obtained according to the above disclosure in the embodiments of the present invention is obtained . numerous modifications and variations of the present invention are possible in light of the above teachings . it is therefore to be understood that within the scope of the appended claims , the invention may be practiced otherwise than as specifically described herein .
an ultrasound diagnosis apparatus includes an ultrasound probe and a main unit . the ultrasound probe includes a cable , a probe head coupled to one end of the cable , and a connector coupled to the other end of the cable . the probe head has an ultrasound transducer . the ultrasound probe is configured to transmit an ultrasound signal and receive an echo signal resulting from the ultrasound signal . the main unit has a concave portion into which the connector is inserted . the main unit is configured to receive the echo signal from the ultrasound probe and to process the echo signal so as to obtain an ultrasound image . the concave portion is slanted on a side surface of the main unit .