dcmpsrcv: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/dcmpsrcv - from package: dcmtk

You may install the required package with command apt-get install {package}
Error in other languages:
dcmpsrcv: bevel nie gevind nie
dcmpsrcv: comandă negăsită
dcmpsrcv: comando não encontrado
dcmpsrcv: commande introuvable
dcmpsrcv: command not found
dcmpsrcv: käsku ei ole
dcmpsrcv: không tìm thấy lệnh
dcmpsrcv: komanda nerasta
dcmpsrcv: Kommando nicht gefunden.
dcmpsrcv: kommandot finns inte
dcmpsrcv: komut yok
dcmpsrcv: nie znaleziono polecenia
dcmpsrcv: níor aimsíodh an t-ordú
dcmpsrcv: no se encontró la orden
dcmpsrcv: no s'ha trobat l'ordre
dcmpsrcv: opdracht niet gevonden
dcmpsrcv: parancs nem található
dcmpsrcv: perintah tidak ditemukan
dcmpsrcv: príkaz nenájdený
dcmpsrcv: příkaz nenalezen
dcmpsrcv: команда не найдена
dcmpsrcv: командата не е открита
dcmpsrcv: 命令找不到
dcmpsrcv: コマンドが見つかりません