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Radiology university theory exam writing 30 Marks each questions,full answers writing cover all possible area in given questions

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COMPLETE EXAM ANSWERS - SUMMARY INDEX

All 14 answerable questions (Q32 was blank) have been fully addressed above. Here is a quick reference:
Q#TopicKey Exam Points
20Hypertrophic Pyloric StenosisUSG criteria (wall ≥4mm, length ≥17mm); String sign on barium; Cervix/Target sign on USG
21Barium Findings in Intestinal PathologiesApple core (Ca colon), String sign (Crohn's), Leather bottle (linitis plastica), Double bubble (duodenal atresia), Lead pipe (UC)
22Paediatric Abdominal Masses - USG & D/DAge-based approach; Wilms' vs. Neuroblastoma table; Claw sign, calcification, vascular encasement
23IntussusceptionDoughnut/Target/Pseudokidney signs on USG; Claw + Coiled spring on barium; Pneumatic reduction
24SMA SyndromeAMS angle <25°, distance <8mm on CT; String sign + reverse-3 on barium; Relief in left lateral
25AAA and ComplicationsCT: Draped aorta, Crescent sign, endoleak types; USG screening protocol; Rupture types
26Complications of PancreatitisAtlanta classification; CTSI Balthazar score; Pseudocyst vs. WON; Pseudoaneurysm; Infected necrosis = gas
27Cystic Omental/Mesenteric MassesLymphangioma (multilocular, thin-walled); Enteric cyst (gut signature); Hydatid (water lily sign)
28Hiatus Hernia4 types; Barium signs (string/B ring/Schatzki); Linitis plastica-type volvulus; CT hook sign
29Carcinoid Tumor of GITStellate mesenteric mass; 68Ga-DOTATATE PET gold standard; Octreoscan; Liver mets hypervascular
30Oesophagus Anatomy + Dysphagia4 narrowings; 3-phase swallowing; VFSS for stroke; CT for mediastinal nodes/goitre/osteophytes
31Infantile Small Bowel ObstructionDouble bubble (duodenal atresia); Soap bubble/no air-fluid (meconium ileus); Whirlpool sign (volvulus); Transition zone (Hirschsprung's)
33Lymphatics of Stomach + Gastric Ca4 drainage areas → coeliac → thoracic duct; Virchow's node; CT staging; EUS for T-staging; Linitis plastica
34PheochromocytomaRule of 10s; "Light bulb" T2 on MRI; >10 HU on NECT; MIBG scan; 68Ga-DOTATATE; pre-op alpha-block
35Generalised SplenomegalyCCMGT causes of massive splenomegaly; USG measurement; CT findings per aetiology; Haemosiderosis on MRI (T2 dark)
Note for Q32: The question was not visible/blank in the image provided. If you have the question text, send it and I will write the full 30-mark answer immediately.
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Radiology university theory exam writing 30 Marks each questions,full answers writing cover all possible area in given questions

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Radiology university theory exam writing 30 Marks each questions,full answers writing cover all possible area in given questions


COMPLETE EXAM ANSWERS - QUESTIONS 36-46 SUMMARY INDEX

All 11 questions fully answered across this and the previous response. Here is the complete reference:
Q#TopicKey High-Yield Points
36Pneumatosis IntestinalisLinear vs. cystic gas; NEC Bell staging; Portal venous gas = ischaemia; CT: absent wall enhancement = infarct
37Meckel's DiverticulumRule of 2s; Tc-99m Pertechnetate scan = investigation of choice; "String sign" on SBFT; CT: blind-ending ileal sac; cimetidine enhances scan sensitivity
38Acute Abdomen - 50FAge/sex-specific differential (diverticulitis, ovarian pathology, cholecystitis); USG first (gynaecological), CT definitive; Modified Hinchey for diverticulitis
39Haemoptysis - 40MCXR first; HRCT for parenchyma; CTPA for PE/AVM; Bronchial arteriography + BAE for massive haemoptysis; Air crescent = aspergilloma; String sign = Kantor (Crohn's)
40MDCT in Acute AbdomenDual-phase protocol; sensitivity 94-100%; specific CT signs per condition: arrowhead (appendicitis), CTSI (pancreatitis), whirlpool (volvulus), draped aorta (AAA)
41Elastography in LiverFibroScan TE: >12.5 kPa = cirrhosis; MRE most accurate (AUC 0.97); 2D-SWE for focal lesions; CAP for steatosis; light bulb on T2 = haemangioma
42Liver Segmental Anatomy + CECT + Focal LesionsCouinaud 8 segments; 3 hepatic veins = landmarks; Hepatic arterial (35-45s) = HCC/FNH; Portal (60-80s) = maximum parenchyma/hypovascular mets; APHE + washout = LR-5 HCC
43Crohn's DiseaseTransmural, skip lesions, cobblestone; String sign Kantor; Creeping fat + comb sign on CTE; MRE: T2 bright = active, T2 dark = fibrotic; Perianal = MRI gold standard
44CECT Phases (Full Detailed)6 phases: NECT→Early arterial→HAP (35-45s)→PVP (60-80s)→Equilibrium (3-5min)→HBP (MRI, 20min); Bolus tracking technique; Fat-water shift principles
45Acute Abdomen Adults - 5 Conditions50 causes listed; Appendicitis (CT: >6mm, fat stranding); Perforation (CXR: free gas, CT: pneumoperitoneum 99%); Pancreatitis (CTSI); Sigmoid volvulus (coffee bean/whirlpool); Mesenteric ischaemia (CTA: filling defect, bowel: absent enhancement)
46Liver MRI Sequences8+ sequences: T1 GRE IP/OOP (fat/iron), T2 HASTE/TSE (lesion characterization), DWI+ADC (cellularity), Dynamic VIBE (enhancement), MRCP, HBP-Primovist (FNH vs. adenoma), MRE (fibrosis), T2*/PDFF (iron/fat quantification)
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Radiology university theory exam writing 30 Marks each questions,full answers writing cover all possible area in given questions

This is the same image as the previous two submissions. All answers for Q36-46 have already been fully written and delivered in the previous responses. Here is a complete summary of where each answer is located:

COMPLETE ANSWERS - LOCATION GUIDE

From Response 2 (Questions 36-43):

Q#TopicCovered In
Q36Pneumatosis IntestinalisResponse 2 - Full answer with: pathophysiology (3 theories), primary vs. secondary causes, AXR signs (linear/bubbly/cystic), CT findings (intramural gas pattern, portal venous gas), NEC Bell staging, benign vs. ischaemic differentiation table
Q37Meckel's DiverticulumResponse 2 - Full answer with: Rule of 2s, Tc-99m pertechnetate scan technique + false positives/negatives + cimetidine enhancement, barium SBFT signs, CT findings, complications table, D/D from appendicitis
Q38Acute Abdomen - 50FResponse 2 - Full answer with: 50+ causes by category, AXR/USG/CT findings, specific signs per condition (Murphy's sign, arrowhead sign, whirlpool sign), Modified Hinchey staging, summary table
Q39Haemoptysis - 40MResponse 2 - Full answer with: CXR findings, HRCT chest (carcinoma/TB/bronchiectasis/aspergilloma), CTPA, bronchial arteriography + BAE technique, PET/CT, algorithm flowchart, summary table
Q40Role of MDCT in Acute AbdomenResponse 2 - Full answer with: CT protocol phases, appendicitis (fat stranding, arrowhead sign), cholecystitis (emphysematous/gangrenous), diverticulitis (Hinchey), obstruction (transition zone, closed-loop), mesenteric ischaemia (CTA), ruptured AAA, perforation, MDCT vs. other modalities table
Q41Elastography in LiverResponse 2 - Full answer with: TE/FibroScan (fibrosis kPa thresholds), ARFI/pSWE, 2D-SWE, MR Elastography (most accurate - AUC 0.97), CAP for steatosis, confounders table, clinical applications
Q42Liver Segmental Anatomy + CECT Phases + Focal LesionsResponse 2 - Full answer with: Couinaud 8-segment system, 3 hepatic vein landmarks, practical CT identification tips, all 6 CECT phases, benign + malignant focal lesion table with enhancement characteristics, LI-RADS classification
Q43Crohn's DiseaseResponse 2 - Full answer with: Pathology (transmural, skip lesions), barium signs (String sign of Kantor, cobblestone, rose thorn), CT enterography (creeping fat, comb sign, target sign), MRE (active T2 bright vs. fibrotic T2 dark, MaRIA score), perianal Parks' classification, Crohn's vs. UC table

From Response 3 (Questions 44-46):

Q#TopicCovered In
Q44CECT Phases - Explaining Each Phase (Full Standalone)Response 3 - Comprehensive standalone answer: NECT (steatosis grading, haemorrhage, calcification, iron), Early arterial (aortic anatomy), Hepatic arterial 35-45s (HCC APHE, FNH spoke-wheel, haemangioma nodular), Portal venous 60-80s (maximum parenchyma, hypovascular mets, HCC washout, portal thrombosis), Equilibrium 3-5min (HCC capsule, cholangiocarcinoma retention, haemangioma fill-in), HBP 20min MRI (FNH vs. adenoma, HCC in cirrhosis), contrast technique, contraindications
Q45Causes of Acute Abdomen + 5 ConditionsResponse 3 - 50 causes listed across 5 categories; 5 conditions in full: (1) Acute Appendicitis - AXR/USG (target sign, >6mm)/CT (arrowhead, fat stranding, abscess); (2) Peptic Ulcer Perforation - erect CXR (Rigler's/ligamentum teres signs)/CT (pneumoperitoneum 99%); (3) Acute Pancreatitis - USG/CT (CTSI Balthazar table, necrosis, complications)/MRCP; (4) Sigmoid Volvulus - AXR (coffee bean sign)/contrast enema (bird beak)/CT (whirlpool sign, ischaemia signs); (5) Acute Mesenteric Ischaemia - AXR (thumbprinting)/CTA (SMA embolism vs. thrombosis vs. NOMI vs. MVT)/bowel wall finding table
Q46Liver MRI SequencesResponse 3 - All 8+ sequences: T1 GRE in-phase/out-of-phase (chemical shift, fat quantification, iron); T2 HASTE + T2 TSE fat-suppressed (light bulb sign, tissue characterization table); DWI + ADC map (b-values, restricted diffusion, abscess vs. necrosis); Dynamic VIBE (all enhancement phases); MRCP (heavily T2); HBP Primovist (FNH vs. adenoma; OATP mechanism); MR Elastography (60Hz shear waves, kPa thresholds, AUC 0.97); T2* GRE (iron R2* quantification); PDFF mDIXON (fat fraction); SWI; Perfusion MRI; Artefacts table; Complete liver MRI protocol table

All 11 questions (Q36-Q46) are fully answered with comprehensive 30-mark level content. If you have a new set of questions from a different page, please share that image and I will write complete answers for those as well.

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