Endodontics Impacted wisdom tooth seen on<unk> . The<unk>  has the most important advantage in Endodontics as the 3D demonstrates critical root canal anatomical features that conventional intraoral, or panoramic images cannot. According to the American Association of Endodontics, there are many specific situations where 3D images produced by<unk>  enhances diagnosis and influences treatment and its use can not be disputed over conventional intraoral radiology following the principles of ALARA. Implantology A dental<unk> <unk>  scan offers useful information when it comes to the assessment and planning of surgical implants. The American Academy of Oral and Maxillofacial Radiology (AAOMR) suggests<unk> -beam CT as the preferred method for presurgical assessment of dental implant sites. Orthodontics As a 3D rendition,<unk>  offers an undistorted view of the dentition that can be used to accurately visualize both erupted and non-erupted teeth, tooth root orientation and anomalous structures, that conventional 2D radiography cannot. Processing example using x-ray data from a tooth model: File:DVT-scan-MagoCut-bild1-singlesample.single sampled (noisy) image File:DVT-scan-MagoCut-bild2-oversamplefocus.several samples overlay File:DVT-scan-MagoCut-bild3-panoramiomodejoined.joined images to panoramic File:DVT-scan-MagoCut-bild4-dvtreconstructed.algorithmic reconstruction File:CBCT image 03.in-vivo image Orthopedics The<unk>  scanner offers undistorted views of the extremities. One advantage of orthopedic<unk>  is the ability to take weight bearing images of the lower extremities. In the realm of the foot and ankle particularly, weight bearing<unk>  is gaining momentum due to its ability to combine 3 dimensional and weight bearing information which are of the utmost importance in diagnosis and surgical planning. The preferred term used for<unk>  in the lower limb is thus WBCT for Weight Bearing CT following the first scientific publications on the subject. Image-guided radiation therapy Image-guided radiation therapy is a form of external<unk>  radiotherapy where the patient is positioned with the organs to be treated accurately matched in position to the treatment field, to reduce the dose to nearby organs which are not being treated. Many organs inside the body move by millimeters relative to the external skin surfaces, and a<unk>  scanner mounted on the head of the radiotherapy unit is used immediately before treatment (and sometimes again during treatment) to ensure the patient's organs are in exactly the right position to match the treatment field, and to adjust the position of the treatment table if necessary. The images may also be used to check for other requirements of some types of treatment, such as full or empty bladder, empty rectum, etc. The same<unk> <unk> <unk>  source and detector can alternatively be used to take simple X-ray positioning images if the organ shows particularly well on X-ray or if Fiducial markers have been inserted into the organ. Interventional radiology The<unk>  scanner is mounted on a C-arm fluoroscopy unit in the interventional radiology (IR) suite, which offers real time imaging with a stationary patient. This eliminates the time needed to transfer a patient from the angiography suite to a conventional computed tomography scanner and facilitates a broad spectrum of applications of<unk>  during IR procedures. The clinical applications of<unk>  in IR include treatment planning, device or implant positioning and assessment, intra-procedural localization, and assessment of procedure endpoints.<unk>  is useful as a primary and supplemental form of imaging. It is an excellent adjunct to DSA and fluoroscopy for soft tissue and vascular visibility during complex procedures. The use of<unk>  before fluoroscopy potentially reduces patient radiation exposure. Clinical applications * Chemoembolization for Hepatocellular Carcinoma:<unk>  with contrast confirms that the proper artery is selected to deliver the therapy. The contrast enhances the parenchyma supplied by the selected artery and therefore reveals if the vasculature also supplies the tumor. Post treatment noncontrast<unk>  confirms lipiodol staining of the tumor, which improves operator confidence of complete tumor coverage or further treatment. * Prostatic artery embolization for benign prostatic hypertrophy:<unk>  provides the soft tissue detail needed to visualize prostatic enhancement, identify duplicated prostatic arteries, and avoid nontarget embolization.<unk>  is superior to DSA for this therapy since the enhancement patterns on DSA can be difficult to discern due to the overlapping pelvic structures and variable arterial anatomy. * Abscess drainage:<unk>  confirms needle tip location after placement under ultrasound and confirms drain placement by revealing contrast injection into the desired location. * Adrenal Vein sampling for an adenoma: contrast enhanced<unk>  shows perfusion of the adrenal gland to confirm catheter placement for obtaining a satisfactory sample. * Stent placement:<unk>  improves the visualization of intracranial and extracranial stents compared to conventional DSA and digital radiography by providing a better depiction of the relationship of the stents to nearby structures (i.e. vascular walls and aneurysm lumen). * Lung nodule percutaneous transthoracic needle biopsy:<unk>  guides needle placement and demonstrated a diagnostic accuracy, sensitivity, and specificity of 98.2%, 96.8%, and 100%, respectively. Diagnostic accuracy was unaffected by technically challenging conditions. * Vascular Anomalies: After correction of arteriovenous malformations with coiling,<unk>  sensitively detects small infarcts in tissue that has been "sacrificed" during the procedure to prevent further shunting. The infarcted tissue appears as a small area of contrast retention. * Peripheral Vascular Interventions * Biliary Interventions * Spinal Interventions * Enterostomy Interventions
Cone beam computed tomography
High-resolution computed tomography
Urinary tract ultrasound
Renal ultrasonography
Prostate saturation biopsy
Urine cytology
Photon-counting computed tomography
Full-body CT scan