Emission computed tomography

Emission computed tomography
ICD-9-CM	92.0-92.1
MeSH	D014055
OPS-301 code	3-72-3-75

Emission computed tomography (ECT) is a type of tomography involving radioactive emissions.

Types include positron emission tomography (PET) and Single-photon emission computed tomography (SPECT).

The imaging agent used in SPECT emits gamma rays, as opposed to the positron emitters (such as ¹⁸F) used in PET. There are a range of radiotracers (such as ^99mTc, ¹¹¹In, ¹²³I, ²⁰¹Tl) that can be used, depending on the specific application.

Medical imaging (ICD-9-CM V3 87–88, ICD-10-PCS B, CPT 70010–79999)

X-ray/
Radiography

Medical:	Pneumoencephalography Dental radiography Sialography Myelography CXR Bronchography AXR KUB DXA/DXR Upper gastrointestinal series/Small-bowel follow-through/Lower gastrointestinal series Cholangiography/Cholecystography Mammography Pyelogram Cystography Arthrogram Hysterosalpingography Skeletal survey Angiography Angiocardiography Aortography Venography Lymphogram
Industrial:	Radiographic testing

CT scan

Techniques:	General operation of CT Quantitative CT High resolution CT X-ray microtomography Electron beam tomography
Targets	Coronary Calcium scan CT angiography Abdominal and pelvic CT Virtual colonoscopy CT angiography Coronary CT Pulmonary CT Head CT Thyroid CT Whole body imaging Full-body CT scan

Other

MRI

Ultrasound

Radionuclide

2D / scintigraphy

Cholescintigraphy Scintimammography Ventilation/perfusion scan Radionuclide ventriculography Radionuclide angiography Radioisotope renography Sestamibi parathyroid scintigraphy Radioactive iodine uptake test Bone scintigraphy Immunoscintigraphy Dacryoscintigraphy DMSA scan Gastric emptying scan
Full body:	Octreotide scan Gallium 67 scan Indium-111 WBC scan

3D / ECT

SPECT (gamma ray):	Myocardial perfusion imaging
PET (positron):	Brain PET Cardiac PET PET mammography PET-CT PET-MRI

Optical/Laser

Thermography

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