Abdominal - Pelvic Ultrasound And Ct Abdomen Pelvis

Front 1

List the most important obstetric-gynaecological conditions diagnosed with abdominal-pelvic ultrasound.

Back 1

1. Ectopic pregnancy
2. Intrauterine pregnancy
3. Ovarian torsion
4. Tuboovarian abscess
5. Ovarian cyst
6. uterine fibroids
7. Gynaecological cancer.

Front 2

List the potential limitations of pelvic ultrasound-both transabdominal and transvaginal.

Back 2

Transabdominal
1. obesity - poorer image quality
2. small/unfilled bladder - poorer image quality

Transvaginal
1. full bladder - poorer image quality


General
1. Technician dependent
2. After hours access

Front 3

Which is incorrect regarding CT scans of teh abdomen-pelvis?
1. Sensitivity for bowel and mesenteric injuries anges 69-95%
2. The sensitivity for solid organ injury is high [ >90%].
3. Sensitivity is generally greater than specificity.
4. Specificity is 95-100%

Back 3

3. Specificity > sensitivity

Front 4

List the conditions in the RUQ that can be readily diagnosed with CT scan abdomen.

Back 4

1. Cholecystitis
a. distended GB
b. GB wall thickening > 3mm
c. increased attenuation of GB wall
d. pericholecystic fluid
2. Pancreatitis
a. sterile necrosis
b. infective necrosis
3. Ascending cholangitis
4. Perforated hollow viscus
5. Hepatic tumour / abscess

Front 5

List the RLQ conditions readily diagnosed with abdominal CT.

Back 5

1. Appendicitis
2. Ectopic pregnancy
3. Mesenteric adenitis
4. Hernia
5. Diverticulitis
6. Nephrolithiasis-renal calculi
7. Ovarian pathology
8. Psoas abscess

Front 6

List the LUQ conditions diagnosed with CT abdomen.

Back 6

1. Pancreatitis
2. Splenic abscess / infarct
3. Peptic ulcer disease
4. Hiatus hernia
5. Gastric malignancy

Front 7

List the LLQ conditions diagnosed with CT abdomen.

Back 7

1. Diverticulitis
2. ectopic pregnancy
3. Ovarian pathology
4. Hernia
5. Psoas abscess
6. Renal calculi

Front 8

Conditions with Generalised abdominal pain diagnosed with CT abdomen.

Back 8

1. AAA
2. Small bowel obstruction
3. Aortic dissection

Front 9

List the limitations of CT scan.

Back 9

1. Radiation
a. CTAP + contrast in 20 yr old approximately 1: 500 lifetime risk of cancer; 1: 1000 for 40 yr old
2. Contrast
- renal impairment
3. Morbidly obese
a. > 170 kg too heavy for CT table
b. increased scatter +++ from fat [ lowers diagnostic yield]
4. Paediatric - less developed fat planes = lower diagnostic yield.

Front 10

List the exceptions of USS over CT in abdominal pain Ix

Back 10

1. Paediatric
2. Pregnancy
3. RUQ pain [ biliary colic / cholecystitis ]
4. Female pelvic pain
5. Chronic relapsing-remitting abdominal pain
eg. Crohn's disease

Front 11

Compare the sensitivity and specificity of USS and CT in Appendicitis

Back 11

USS CT

Sensitivity 76-89% 90-100%

Specificity 85-92% 95-97%