CT SPECIAL APPLICATIONS. CT ANGIOGRAPHY CT IMAGE OF THE BLOOD VESSEL OPACIFIED BY CONTRAST.

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Presentation transcript:

CT SPECIAL APPLICATIONS

CT ANGIOGRAPHY

CT IMAGE OF THE BLOOD VESSEL OPACIFIED BY CONTRAST

REQUIREMENTS FOR CTA PATIENT PREPARATION ACQUSITION PARAMETERS CONTRAST MEDIUM ADMINISTRATION POSTPROCESSING TECHNIQUES

PATIENT PREP. BUN 7-20 mg/dl CREAT –1.2 mg/dl IODINE ALLERGY- STEROID THERAPY HYPERVENTILATION BEFORE EXAM FOR BETTER BREATHOLD

CONTRAST ADMINISTERED WITH POWER INJECTOR

POWER INJECTOR PARAMETERS VOLUME OF CONTRAST-ml RATE ml/sec TIME OF INJECTION – sec SCAN DELAY TIME - sec

CONTRAST WARMER WHY???

CARE BOLUS

ACQUSITION PARAMETERS

PE?

Circle of Willis

Circle of Willis?! 40 SEC

ABDOMINAL CTA

CTA - MPR PLANE?

ABDOMINAL AND FEMORAL RUNOFF

CARDIAC CT

CARDIAC CT PROCEDURES CARDIAC ANGIOGRAM CALCIUM SCORING

NO IV CONTRAST USED

CALCIUM SCORING

CARDIAC ANGIOGRAM PERFORMED WITH CONTRAST INJECTION 4-5 cc/sec 150 cc total volume

CARDIAC ANGIOGRAM

CINE CTA

VIRTUAL ENDOSCOPY USE OF VIRTUAL REALITY CONCEPTS TO THE CREATION OF INNER VIEWS OF TUBULAR STRUCTURES

VIRTUAL ENDOSCOPE GRAPHICS-BASED SOFTWARE USED FOR SIMULATING ENDOSCOPIC EXPLORATION INSIDE A 3-D IMAGE

APPLICATION OF VIRTUAL ENDOSCOPY COLONOSCOPY BRONCHOSCOPY CHOLANGIOPANCREATOSCOPY SINUS ENDOSCOPY BLADDER SPINAL CANAL ENDOSCOPY VESSEL ENDOSCOPY- ANGIOSCOPY NEURONS UTERUS & FALLOPIAN TUBES

COLONOSCOPY

BRONCHOSCOPY

VENTRICULOSCOPY

CORONARY ENDOSCOPY

HYSTERO-SALPINGOSCOPY

SPINAL CANAL SCOPE

DISADVANTAGE OF VIRTUAL ENDOSCOPY HIGH COST LACK OF QUANTITATIVE DATA INABILITY OF PERFORMANCE OF REAL INTERVENTIONAL PROCEDURE WITHOUT REAL ENDOSCOPE NO INFO ON MUCOSAL SURFACE IMAGE QUALITY LIMITED BY RESOLUTION OF SYSTEM.

CT FLUORO

CONVENTIONAL CT LIMITATION LACK OF REAL TIME IMAGE DISPLAY DATA COLLECTION IMAGE RECON LAG!!

FUNDAMENTAL PRINCIPLES OF REAL TIME IMAGING FAST CONTINUOUS SCANNING FAST IMAGE RECONSTRUCTION CONTINUOUS IMAGE DISPLAY

RADIATION TREATMENT

The 65 cm variable field of view delivers 15 additional cm of visual coverage, allowing clinicians to see a patient’s entire anatomy, facilitating precise radiation therapy planning

Quantitative CT MEASUREMENT OF MINERAL CONTENT OF TRABECULAR BONE IN OSTEOPOROSIS BMD

QUANTITATIVE CT - STEPS SCOUTSLICE SELECTION AXIAL IMAGES AUTOMATIC CANTOUR TRACING ROI MEAN VALUE CALCULATION ROI VALUE CONVERTED TO BMD VALUE GRAPHIC OUTPUT, GRAPH BMD vs AGE, COMPARISON PERFORMED

XENON CT INHALATION OF XENON GAS.

XENON CT Z # 54

XENON- IDEAL GAS FOR STUDYING BRAIN FUNCTION AND CEREBRAL BLOOD FLOW HIGH Z# - HIGH ATTENUATION HIGH FAT SOLUBILITY ABILITY TO CROSS BLOOD BRAIN BARRIER

XENON CT USEFUL IN EVALUATING REGIONAL PERFUSION IN CEREBROVASCULAR DISEASE AND STUDYING BRAIN METABOLISM. CLINICAL ROLE IN STUDYING: DEMENTIA, SLEEP DISORDERS, MIGRANES, AND EPILEPSY