[{"n": "4DCT", "u": "/e/radiology/4dct/", "s": "4DCT adds time to 3D CT for motion tracking."}, {"n": "Aidoc", "u": "/e/radiology/aidoc/", "s": "AI-powered triage for acute findings in medical imaging."}, {"n": "Anti-scatter grid", "u": "/e/radiology/anti-scatter-grid/", "s": "Device that reduces scattered X-rays to improve image contrast."}, {"n": "Aortopulmonary window", "u": "/e/radiology/aortopulmonary-window/", "s": "A rare congenital defect causing a left-to-right shunt between aorta and pulmonary artery."}, {"n": "Bone scintigraphy", "u": "/e/radiology/bone-scintigraphy/", "s": "Nuclear medicine imaging of bone metabolism and remodeling."}, {"n": "Collimator", "u": "/e/radiology/collimator/", "s": "Device that narrows beams of particles or waves."}, {"n": "Companion shadow", "u": "/e/radiology/companion-shadow/", "s": "A radiodensity paralleling bone, often a normal soft-tissue variant."}, {"n": "Computational human phantom", "u": "/e/radiology/computational-human-phantom/", "s": "Models of the human body for computerized radiation dosimetry analysis."}, {"n": "Computed tomography enterography", "u": "/e/radiology/computed-tomography-enterography/", "s": "CT imaging of the small bowel using oral contrast."}, {"n": "Computer-aided diagnosis", "u": "/e/radiology/computer-aided-diagnosis/", "s": "Systems that assist radiologists by highlighting suspicious structures in medical images."}, {"n": "Computer-aided simple triage", "u": "/e/radiology/computer-aided-simple-triage/", "s": "Automated initial triage for emergency imaging studies."}, {"n": "Dose area product", "u": "/e/radiology/dose-area-product/", "s": "DAP measures radiation risk from X-ray exams."}, {"n": "Dual X-ray absorptiometry and laser", "u": "/e/radiology/dual-x-ray-absorptiometry-and-laser/", "s": "DXL enhances DXA with laser thickness measurement for bone density."}, {"n": "Dual-energy X-ray absorptiometry", "u": "/e/radiology/dual-energy-x-ray-absorptiometry/", "s": "DXA measures bone density using two X-ray energy levels."}, {"n": "Echocardiography", "u": "/e/radiology/echocardiography/", "s": "Non-invasive ultrasound imaging of the heart."}, {"n": "Effective dose (radiation)", "u": "/e/radiology/effective-dose-radiation/", "s": "A risk-weighted dose quantity for whole-body radiation protection."}, {"n": "Electron resonance imaging", "u": "/e/radiology/electron-resonance-imaging/", "s": "Preclinical imaging detecting free radicals via spin probes."}, {"n": "EOS (medical imaging)", "u": "/e/radiology/eos-medical-imaging/", "s": "Low-dose X-ray system for 3D orthopedic imaging."}, {"n": "EOS imaging", "u": "/e/radiology/eos-imaging/", "s": "Orthopedic imaging systems for 2D and 3D skeletal analysis."}, {"n": "G-arm medical imaging", "u": "/e/radiology/g-arm-medical-imaging/", "s": "Fluoroscopic system providing simultaneous two-plane views."}, {"n": "Global radiology", "u": "/e/radiology/global-radiology/", "s": "Subspecialty improving radiology access in underserved regions worldwide."}, {"n": "Hirtz compass", "u": "/e/radiology/hirtz-compass/", "s": "Device for locating and removing bullets and shrapnel."}, {"n": "History of radiation protection", "u": "/e/radiology/history-of-radiation-protection/", "s": "Radiation protection evolved from early harm to strict global regulations."}, {"n": "Hounsfield scale", "u": "/e/radiology/hounsfield-scale/", "s": "Quantitative scale for radiodensity used in CT scans."}, {"n": "Incidental imaging finding", "u": "/e/radiology/incidental-imaging-finding/", "s": "An unanticipated imaging finding unrelated to the original diagnostic inquiry."}, {"n": "International Day of Radiology", "u": "/e/radiology/international-day-of-radiology/", "s": "Annual event celebrating medical imaging and the discovery of x-rays."}, {"n": "John Thomas sign", "u": "/e/radiology/john-thomas-sign/", "s": "A slang radiology sign relating penis direction to pelvic pathology."}, {"n": "Laboratory Unit for Computer Assisted Surgery", "u": "/e/radiology/laboratory-unit-for-computer-assisted-surgery/", "s": "Virtual surgical planning system with integrated navigation tools."}]