mdctone22 150621221718 lva1 app6892

MIP IMAGE POSTERIOR VIEW VR DOUBLE DENSITY IMAGE POSTERIOR VIEW... DOUPLEX LEFT COLLECTING SYSTEM WITH ECTOPIC UPPER MOIETY URETER... CASE 1NON ENHANCED CT SHOWING BILATERAL RENAL PELVI

MSCT

AN INTRODUCTION TO A NOVEL TECHNIQUE

Dr Hazem Abu Zeid Yousef Lecturer of Radiodiagnosis

Faculty of Medicine Assiut University

The introduction of spiral CT in the early 1990s resulted in fundamental and far-reaching improvement of CT imaging.

For the first time volume data could be acquired without mis-registration of anatomical details, which initiated the development of 3D image processing techniques such as multi-planar reformations (MPRs), maximum intensity projections (MIPs), surface-shaded displays (SSDs) or volume renderings

As an important application CT angiography

(CTA) has been established in clinical practice

As a consequence of increasing clinical

demands, single-slice spiral CT with 1-s gantry rotation time soon encountered its limitations

Larger volume coverage and improved transverse

resolution can be achieved by simultaneous

acquisition of more than one slice and by a shorter

gantry rotation time The first step towards multi-slice acquisition was a two-slice CT scanner introduced

in 1993 (Elscint Twin) In 1998 all major CT

manufacturers introduced multi-slice CT systems

which brought about considerable improvements of scan speed, transverse resolution and utilization of the tube output.

SOME CLINICAL APPLICATIONS OF MDCT

MDCT ANGIOGRAPHY

CEREBRAL ANGIOGRAPHY

THORACIC AORTA

ABDOMINAL AORTA

LOWER LIMB

ARTERIOGRAPHY

PULMONARY ARTERIES

COMPERHENSIVE MSCT OF

THE ABDOMEN

TRIPHASIC LIVER STUDY

HEPATOBILIARY SYSTEM

MDCT UROGRAPHY

NORMAL ANATOMY

FRONTAL (ANTERIOR) VIEW OF VR IMAGES

MIP IMAGE (POSTERIOR VIEW) VR DOUBLE DENSITY IMAGE

(POSTERIOR VIEW)

NORMAL VARIANTS AND CONGENITAL ANOMALIES

NORMAL PAPILLARY BLUSH

PROMINENT RENAL PAPILLA

COMPOUND CALYX

PTOTIC KIDNEY

ECTOPIC KIDNEY

VR IMAGE MIP IMAGE

HORSESHOE KIDNEY

DOUPLEX LEFT COLLECTING SYSTEM WITH

ECTOPIC UPPER MOIETY URETER

UROLITHIASIS

CASE (1)

NON ENHANCED CT SHOWING

BILATERAL RENAL PELVIS

CALCULI WITH MARKED

PYELITIS.

ENHANCED CT SHOWING GOOD ENHANCEMENT.

MIP; THE STONES ARE WELL-SEEN WITHIN THE OPACIFIED RENAL PELVIS

MIP; THE STONES ARE WELL-SEEN WITHIN THE OPACIFIED RENAL PELVIS MULTIPLE UB STONES.

CASE (3)

ACUTELY OBSTRUCTED LEFT KIDNEY WITH PERINEPHRIC COLLECTION (FORNICEAL RUPTURE).

CURVED REFORMATS SHOWING 3 LOWER URETERIC STONES.

CASE (4)

CURVED REFORMAT

LOWER URETERIC STONE

CAUSING MILD HYDRONEPHROSIS

DOUBLE DENSITY VR IMAGE THE STONE IS DEMONSTRATED AGAINST THE UNDERLYINGBONE

CASE (5)

BILHARZIAL CALCIFICATION OF THE LEFT LOWER

URETER WITH LOWER URETERIC STONE.

CASE (6)

RENAL INFECTIONS

CASE (1)

MULTIFOCAL NEPHRONIA

CASE (2)

OBSTRUCTED INFECTED KIDNEY ENLARGED LEFT KIDNEY WITH MARKED STRANDING OF THE PERINEPHRIC FAT AND OBSTRUCTING PELVIC CALCULUS

DOUBLE DENSITY VR IMAGE SHOWING

THE OBSTRUCTING CALCULUS

RENAL SOLs

CASE (1)

DELAYED FILLING OF

CALYCEAL DIVERTICULUM

CASE (2)

SIMPLE (BOSNIAK TYPE I) RENAL CYST

CASE (3)

MULTILOCULAR PARAPELVIC CYST WITH STRETCHING OF THE MAJOR CALYCES

CASE (4)

BOSNIOAK TYPE II CYST WITH THIN CALCIFIED

RIM AND INTRACYSTIC SEPTUM

(THANKS FOR THE SUBMILLEMETRIC SLICE THICKNESS)

CASE (5)

INITIALLY HYPERDENSE SIMPLE CYST (BOSNIAK TYPE II)

CASE (6)

BOSNIAK TYPE III CYST

THICK ENHANCING INCOMPLETE SEPTUM AND IRREGULAR OUTLINES

CASE (7)

BOSNIAK TYPE IV CYST

THICK ENHANCING MURAL NODULE

CASE (8)

SOLID PARAPELVIC MASS CLEARLY DEMONSTRATED

IN CORONAL IMAGES

CASE (9)

MALIGNANT LOWER POLAR LEFT RENAL MASS WITH

ENHANCING MALIGNANT THROMBUS WITHIN THE IVC

AND SECONDARY VARICOSITIES OF THE LEFT TESTICULAR VEIN.

CASE (10)

MALIGNAT SUPRARENAL MASS WITH LIVER METASTASES

DISPLACED LEFT KIDNEY WITH

DOUPLEX RIGHT COLLECTING SYSTEM

CASE (10)

CASE (1)

CASE (2)

CASE (3)

CASE (6)

FIBROVASCULAR POLYP OF THE URETER

URINARY BLADDER

CASE (1)

EXTRAVESICAL PARARECTAL MASS

CASE (3)

RENAL ARTERY ASSESSMENT

SOME SPECIAL TECHNIQUES

CONTRAST ENEMA

MDCT FISTULOGRAPHY

ASSESSMENT OF POLYTRAUMA

FRACTURE MANDIBLE

FRACTURE CX SPINE

FRACTURE L.S.S.

FRACTURE PELVIS

THANK YOU