Angulated views in coronary angiography,an introductory lecture for cath lab technicians dr awadhesh
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Angulated views in coronary angiography,an introductory lecture for cath lab technicians dr awadhesh
1. Angulated views in coronary
angiography
An Indroductory lecture for cath lab technicians
Dr Awadhesh Kumar Sharma
MD(Gold Medalist),DM Cardiology
2. Dr Awadhesh Kumar Sharma
Dr.Awadhesh Kumar Sharma is a young, diligent and dynamic interventional cardiologist. He did
his graduation from GSVM Medical College Kanpur and MD in Internal Medicine from MLB
Medical college Jhansi.Then he did his superspecilization degree DM in Cardiology from PGIMER
& DR Ram Manohar Lohia Hospital New Delhi. He had excellent academic record with Gold
medal in MBBS,MD and first class in DM. He was also awarded chief ministers medal in 2009 for
his academic excellence by former chief minister of UP Hon. Mayawati in 2009.He is also receiver
of GEMS international award. He had many national & international publications. He had special
interest in both invasive & non invasive cardiology. He had performed more then 5000 invasive
cardiac intervention procedures successfully till date including coronary angiography, simple &
complex angioplasty, peripheral vessels angiography & angioplasty, carotid angiography &
angioplasty,ASD ,PDA device closures, Mitral & pulmonary valvotomy. He is also in editorial board
of many national & international journal- Journal of clinical medicine & research(JCMR),Clinical
cardiology update, EC Pulmonology and Respiratory Medicine. He is also active member of
reviewer board of many journals. He is also international associate fellow of American college of
cardiology. He is active member of many professional bodies including Indian MedicalAssociation,
Cardiological Society of India,APVIC, ICC,API. He had worked in NABHApproved Gracian
Superspeciality Hospital Mohali as Consultant Cardiologist since 2014-2016. Currently he is
working asAssistant Professor of cardiology at LPS Institute of Cardiology, GSVM Medical college,
Kanpur(UP)under Govt of UP.
3. Cineangiographic equipments
A Generator
X Ray tube – under the patients table
Image Intensifier- attached to a positioner such as
C-arm, over the patients table
Optical system
Digital convertor
TV monitors
Control Unit
5. CranialView- image intensifier is tilted towards the
head of the patient
CaudalView- image intensifier is tilted down
toward the feet of the patient
APView – image intensifier is in central position
LateralView – image intensifier is on left side of the
patient horizontally at body level
6. Importance of angulated
views
Proper delineation of coronary & peripheral
vascular anatomy
Origin & course of vessel
Eccentric lesion
7. Standard Angiographic Views
An easy way to identify the tomographic views is to use the anatomic
landmarks - catheter in the descending aorta, spine and the diaphragm.
The rough rules are:
RAO vs. LAO- If the spine and the catheter are to the right of the
image, it is LAO and vice versa. If central, it is likely a PA view
Cranial vs. caudal - If diaphragm shadow can be seen on the image,
it is likely cranial view, if not, it is caudal
Catheter and
spine to the
LEFT
RAO view
No diaphragm
shadow
Caudal view
Catheter at
the
CENTER
PA view
No diaphragm
shadow
Caudal
view
Spine to
the
RIGHTLAO view
Diaphragm
shadow
Cranial view
8. Standard Angiographic Views
RAO-Caudal view: 100
to 200
RAO and 150
to 200
caudal
Best for visualizing-
Left main bifurcation
Proximal LAD
Proximal to mid LCx
Left Coronary Artery
9. Standard Angiographic Views
Left Coronary Artery
RAO 20 Caudal 20
LM
LAD
Diagonal
Septals
Distal
LAD
LCx
RAO 20 Caudal 20
Knowledge of the orientation of the artery
for a given view can help identify the
probable path of the artery in the setting of
complete occlusion
Distal LAD
fills by
collaterals
LAD
Best for visualization of
LM bifurcation and
proximal LAD and LCx
10. LAO-Cranial view: 300
to 600
LAO and 150
to 300
cranial
Best for visualizing
Mid and distal LAD
Distal LCx in a left dominant system
Separates out the septals from the diagonals
Left Coronary Artery
11. Standard Angiographic Views
Left Coronary Artery
LAO 50 Cranial 30
LM
LAD
Diagonal
Septals
Distal
LAD
LCx
PA 0 Cranial 30
LM
LAD
Diagonal
Septals
Distal
LAD
LCx
Best for visualization of LM
proximal and mid LAD
Best for visualization of proximal and
mid LAD and splaying of the septals
from the diagonals. Also ideal for
visualization of distal LCx
12. Left Coronary Artery
PA-Cranial view: 00
lateral and 300
cranial
Best for visualizing -
Mid LAD
Distal LAD
13. Left Coronary Artery
Shallow RAO-Cranial view: 00
to 100
RAO and 250
to 400
cranial
Best for visualizing –
Mid and distal LAD and the
Distal LCx (LPDA and LPL)
Separates out the septals from the diagonals
14. Left Coronary Artery
LAO-Caudal view: 400
to 600
LAO and 100
to 300
caudal
Best for visualizing-
Left main,
Proximal LAD
Proximal LCx
Spider view
15. Standard Angiographic Views
Left Coronary Artery
PA0 Caudal 30
LM
LAD
Diagonal
Septals
Distal
LAD
LCx
LAO 50 Caudal 30
OM
LM
LAD
Diagonal
Distal
LAD
LCx
OM
‘Spider’ view
Best for visualization of LM
bifurcation and proximal
LAD and LCx
Best for visualization of LM
bifurcation, proximal LAD and LCx
and OM
16. Left Coronary Artery
PA-Caudal view: 00
lateral and 200
to 300
caudal
Best for visualizing
Distal left main bifurcation
Proximal LAD
Proximal to mid LCx
17. Left Coronary Artery
PA projection: 00
lateral and 00
cranio-caudal
Best for visualizing
Ostium of the left main
18. Left lateral view:
Best for visualizing
Proximal LCx,
Proximal and distal LAD
Also good for visualizing LIMA to LAD anastomotic site
Left Coronary Artery
19. Standard Angiographic Views
LAO 30: 300
LAO
Best for visualizing ostial and proximal RCA
RAO 30: 300
RAO
Best for visualizing mid RCA and PDA
PA Cranial: PA and 300
cranial
Best for visualizing distal RCA bifurcation and the PDA
Left lateral view: Left Lateral 900
Ostium of the RCA
Midportion of the RCA
Separation of RCA with its RV branches
Right Coronary Artery
20. Standard Angiographic Views
Right Coronary Artery
LAO 30
Proximal
RCA
PDA
Distal
RCA
Mid
RCA
RAO 30
Mid
RCA
PDA/
PLV
PA 0 Cranial 30
Proximal
RCA
PDADistal
RCA
Mid
RCA
Best for visualization of
ostial and proximal RCA
Best for visualization of mid
RCA and PDA
Best for visualization of distal
RCA and its bifurcation
24. Cerebral circulation
APView- Common carotid,External carotid,
Internal carotid,Vertebral arteries
LateralView- Bifurcation of Common carotid
artery into External carotid & Internal carotid
artery
25. Commonly used angiographic
views
Most favorable angulation for iliac angiography is the
contralateral oblique angle, generally 30 to 40 °
The optimal view for the common femoral bifurcation is 30
to 45° of ipsilateral oblique angulation
SFA can be imaged in an anteroposterior view with the
addition of an oblique angle if a stenosis is suspected.
The popliteal artery, tibeoperoneal trunk, and trifurcation
are best imaged in an ipsilateral oblique angle (30°).
Infrapopliteal runoff can be performed in either an
anteroposterior or an ipsilateral oblique projection
N Engl J Med. 2006;354:379 –386
Vasc Endovascular Surg. 2002;36:439–445
LAO 30