Percutaneous Transhepatic Cholangiography (PTC) is a radiographic procedure used to visualize and assess the biliary system, including the bile ducts within the liver and those leading to the small intestine.
Dr. Dheeraj Kumar Assistant Professor em School of Health Sciences, Chhatrapati Shahu Ji Maharaj University, Kanpur, Uttar-Pradesh
2. Contents
• Introduction to Percutaneous
Transhepatic Cholangiography
(PTC)
• Indications and Contraindications
• Procedure Overview
• Imaging Technique
• Interpretation of Results
• Advantages and Disadvantages
• Complications and Safety Measures
• Case Studies
• Conclusion
• Questions and Discussion
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3. Introduction to Percutaneous Transhepatic
Cholangiography (PTC)
• Definition: Percutaneous
Transhepatic Cholangiography
(PTC) is a radiographic procedure
used to visualize and assess the
biliary system, including the bile
ducts within the liver and those
leading to the small intestine.
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5. Purpose
• PTC serves several essential purposes in radiography and healthcare:
• Diagnosis and assessment of biliary system disorders.
• Evaluation of bile duct blockages, strictures, or leaks.
• Preoperative planning for biliary surgery.
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6. History
• History of PTC reflects the ongoing commitment of radiologists and medical researchers
to refine and expand the capabilities of diagnostic radiology.
• From early experiments with contrast agents to the development of sophisticated
percutaneous techniques, PTC has made a lasting impact on the field of medical imaging
and the diagnosis and treatment of biliary system disorders.
• In recent years, the field of interventional radiology has continued to evolve with the
development of less invasive alternatives like magnetic resonance
cholangiopancreatography (MRCP) and endoscopic retrograde cholangiopancreatography
(ERCP).
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7. Pioneer Radiologists and Key Milestones
• Dr. Felix Berci: A pioneer in interventional radiology, Dr. Felix Berci
played a pivotal role in advancing PTC techniques in the 1960s and 1970s.
He introduced safer contrast agents and refined percutaneous puncture
methods.
• Dr. Jean-François Gigot: Dr. Gigot further advanced the field by
contributing to the understanding of PTC's diagnostic capabilities and its
role in guiding biliary surgery.
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8. Indications
• Suspected Biliary Obstruction: PTC is frequently performed when a patient
presents with symptoms such as jaundice, abdominal pain, or abnormal liver
function tests that may suggest biliary obstruction.
• Evaluation of Biliary Anatomy: It is utilized to obtain detailed information
about the biliary system's anatomy and any associated abnormalities.
• Preoperative Planning: Surgeons may request PTC images to plan surgical
interventions involving the biliary tract.
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9. Contraindications
• Allergy to Contrast Media: Individuals with known allergies to iodinated
contrast agents used in PTC should not undergo the procedure.
• Uncontrolled Bleeding Disorders: Patients with severe bleeding disorders
may not be suitable candidates for PTC due to the risk of hemorrhage.
• Severe Coagulopathy: Patients with coagulation disorders or anticoagulant
therapy may require careful consideration and potential adjustment of their
medications.
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10. Procedure Overview
• Patient Preparation:
• Consent and Explanation: Informed
consent is obtained from the patient,
and a detailed explanation of the
procedure is provided.
• Fasting Requirements: Patients are
typically instructed to fast for several
hours before the procedure to reduce
the risk of aspiration and ensure
optimal imaging conditions.
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11. Localization and Skin Marking
• Identifying the Puncture Site:
Imaging guidance, such as
ultrasound or fluoroscopy, is used
to identify the optimal puncture site
on the patient's abdomen.
• Skin Marking: The chosen puncture
site is marked on the patient's skin
for precise needle placement.
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12. Needle Puncture
• Accessing the Biliary System: A
thin, hollow needle is inserted
through the marked site, through
the liver tissue, and into the
biliary system under sterile
conditions and imaging guidance.
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13. Contrast Media Injection
• Visualization of the Biliary System:
A radiopaque contrast material is
injected through the needle into the
biliary system.
• Opacification of Ducts: The
contrast material opacifies the bile
ducts, allowing them to be
visualized on X-ray images.
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14. Imaging and Documentation
• X-ray or Fluoroscopy: Real-time X-ray images or fluoroscopic images
are captured to visualize the contrast's flow within the bile ducts.
• Static Images: Static images may be taken to document specific
findings or abnormalities.
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15. Catheter Placement
• Extended Contrast Injection
or Drainage: In some
cases, a catheter may be left
in place to facilitate
extended contrast injection,
drainage of bile, or
therapeutic interventions.
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16. Imaging Technique
• Radiographic Equipment:
• Fluoroscopy or X-ray Machine: PTC is
typically performed using fluoroscopy or
X-ray equipment to capture real-time and
static images.
• Image Intensifier: Fluoroscopy often
employs an image intensifier to enhance
image quality and reduce radiation
exposure.
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17. Contrast Media Characteristics
• Radiopaque Properties: The
contrast media used in PTC has
radiopaque properties, making
it visible on X-ray images.
• Opacification of Bile Ducts: It
selectively opacifies the bile
ducts, enhancing their visibility.
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18. Timing and Image Sequence
• Real-time Imaging: Real-time
fluoroscopy allows continuous
monitoring of the contrast flow during
injection.
• Static Images: Static X-ray images
are taken at specific points to
document findings and provide
detailed anatomical information.
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19. Interpretation of Results
Normal vs. Abnormal Findings:
• Normal Bile Duct Anatomy: In a normal PTC, the radiologist observes well-defined
bile ducts with a characteristic branching pattern.
• Identification of Abnormalities: PTC is invaluable for identifying various
abnormalities, including:
• Bile Duct Blockages: The procedure can pinpoint the location and extent of blockages caused
by factors like gallstones or tumors.
• Biliary Strictures: Narrowing or strictures in the bile ducts can be precisely identified.
• Biliary Leaks: PTC can detect leaks in the biliary system, often as a result of injury or surgery.
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20. Radiologist's Role
• Image Analysis: Radiologists play a central role in interpreting PTC
results. They analyze the images, identify abnormalities, and provide
detailed reports.
• Collaboration with Healthcare Team: Radiologists collaborate closely
with surgeons, gastroenterologists, and other healthcare professionals
to determine the best course of treatment based on the PTC findings.
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21. Advantages
• Direct Visualization: PTC provides direct visualization of the biliary
system, offering precise anatomical information.
• Diagnostic Precision: It is highly effective in diagnosing a wide range
of biliary conditions, guiding treatment decisions.
• Minimally Invasive: PTC is less invasive than surgical exploration and
can often replace more invasive procedures.
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22. Disadvantages
• Invasive Nature: PTC is an invasive procedure, involving percutaneous
access to the liver, which carries inherent risks.
• Risk of Complications: There is a risk of complications such as bleeding,
infection, or bile leakage, although these are relatively uncommon.
• Limited Therapeutic Role: While PTC is primarily diagnostic, it may also
guide some therapeutic interventions. However, it may not be suitable for
all cases or therapeutic purposes.
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23. Potential Complications
• Bleeding: PTC may lead to bleeding at the puncture site or within the
liver.
• Infection: Infection is a possible complication, although strict sterile
techniques are employed to minimize this risk.
• Perforation: Rarely, there may be unintended perforation of structures
within the liver or bile ducts.
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24. Safety Measures
• Sterile Technique: PTC is performed under strict sterile conditions to reduce
the risk of infection.
• Monitoring: Patients are closely monitored during and after the procedure to
detect and manage complications promptly.
• Preventive Measures: Care is taken to minimize bleeding risks, including
assessment of coagulation status, and correction of coagulopathies when
necessary.
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25. Case Studies
• Case 1: Biliary
Obstruction: Detail a
case where PTC
identified a biliary
obstruction, leading to a
diagnosis and treatment
plan.
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26. Case 2: Biliary Stricture
• Present a scenario
involving a biliary
stricture,
demonstrating how
PTC can precisely
locate and
characterize the
stricture.
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27. Case 3: Complications and Management
• Discuss a case
where complications
arose during PTC
and describe the
appropriate
management and
intervention.
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28. Conclusion
• The diagnostic significance of PTC in evaluating biliary system disorders.
• Indications and contraindications for the procedure.
• The procedure overview, including patient preparation, needle puncture, contrast media injection,
and imaging techniques.
• The role of radiologists in interpreting PTC results.
• Advantages, disadvantages, and safety considerations.
• Potential complications and safety measures.
• Real-world case studies showcasing the diagnostic and therapeutic utility of PTC.
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30. Thank You
Express gratitude to the Students for their active participation, attention, and
contributions during the presentation.
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31. References
• "Radiologic Science for Technologists: Physics, Biology, and Protection"Authors: Stewart C.
Bushong, Publication Year: 2019, Publisher: Elsevier
• "Interventional Radiology Procedures in Biopsy and Drainage“, Authors: Ronald S. Arellano, Aldo
A. Maksoud,Publication Year: 2020, Publisher: Springer
• "Percutaneous Transhepatic Cholangiography: Techniques and Applications“,Authors: C. Christian,
H. Weismann, S. Dengler, et al.,Publication Year: 2021
• "Complications of Percutaneous Transhepatic Cholangiography in the Management of Postsurgical
Biliary Leaks and Strictures“, Authors: Arno NK Joseph, Peter Thuluvath, Publication Year: 2020
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